Dear Customer, Thank you for purchasing a Blower Engineering
product. You are strongly recommended to take the following
preliminary actions:

The instructions given in this manual must be strictly
followed prior to positioning and operating the machine.

The maintenance operations are to be carried out exactly as
described in this manual.

Safety regulations are to be complied with completely.

The operators and the personnel in charge must be well
acquainted with these instructions, which must be available to
them whenever required.

The use of the machine must be only as described in the
operating manual.

The model number of the blower and pertinent serial number are to
be quoted any time additional information is requested. The serial
number is applied on the nameplate fixed to the machine.

Warranty

We warrant that this product will be free from defects in
material and workmanship for a period of 18 months from date of
shipment. Within the warranty period, we shall repair or replace,
F.O.B. our plant, such products that are determined by us to be
defective.

This warranty will not apply to any product that has been
subjected to misuse, negligence or accident or misapplied or
improperly installed. This warranty will not apply to any product
which has been disassembled, repaired or otherwise altered by any
persons not authorized by our Service Department.

Errors and omissions excepted. Information to change on a moments
notice.

TL Series Blowers are positive displacement blowers comprising
two conjugate shaped Tri-Lobe rotors which rotate inside a “figure
8” shaped body. The incoming gas is trapped in the space that forms
between the body (figure 1a, 1b) and discharged via the outlet
(figure 1c, 1d). The operating pressure is generated by the
resistance met by the gas exiting the unit. The capacity is
proportional to the speed of rotation and is almost constant when
the operating pressure varies.

The TL Series Blower is engineered for the smoothest possible
flow of air, resulting in lower pulsation and noise.

The body is closed at both ends by end plates in which the housings
for the seals and bearings are located. The rotors are synchronized
by a pair of timing gears having helical, hardened and ground teeth.
The shafts have labyrinth seals; gas leaks are collected in special
air spaces in the covers and are discharged into the atmosphere. Two
sumps are mounted on the covers which act as oil sumps for splash
lubrication of the bearings and the synchronizing gears. The gears
are secured on the shafts through conical coupling under oil
pressure.

The inlet pressure ranges from 3 psig (20.7 kPa)
to 15 psig (103.4 kPa). The maximum differential pressure is shown
in Table I, and depends on the size of the blower. The maximum
compression ratio for all sizes of blowers is 2.

The inlet temperature of the gas ranges from
-13ºF (-25ºC) to 122ºF (50ºC). The maximum differential temperature
allowed is shown in Table I, and depends on the size of the blower.
The maximum temperature of the gas allowed at the discharge is 266ºF
(130ºC).

Varying the speed of rotation. This can be achieved via belt
drives or by varying the electric motor supply voltage frequency
or with a double polarity motor.

Bleeding off of excess capacity via a regulating valve on
the outlet Do not use the safety valve for this purpose because
it will suffer excessive wear. Do not re-circulate the excess
gas into the blower inlet without cooling because it could
cause excessive heating.

WARNING: Do not adjust the gas capacity by using throttle valves
placed on the inlet or outlet piping.

Keep the blower in a dry cool closed environment. Do not remove the
protective coverings placed over the blower openings. Renew the
preservation every 6 months, or more frequently if the climate is
damp.

To move from the arrangement with inlet and outlet on a vertical
axis to that with inlet and outlet on a horizontal axis and vice
versa, exchange the oil levels by changing the position of the plugs
in accordance with fig. 4.

Use suitable equipment to mount the
sheaves onto the blower and motor shafts. The minimum blower sheave
diameters are shown in Table IV.

WARNING: Do not use a hammer to mount the sheaves.

Mount the drive belts. Belt tension is produced by using the
motor thrust screws in accordance with the values shown in Table V.
During this phase, the alignment of the sheaves must be checked
using a scale resting against the sheaves as shown in figure 5.

WARNING: Excessive belt tension could damage the blower
and the motor.

Secure the feet of the motor

Table IV: Minimum sheave diameter [inches / mm]

TL

Differential Pressure [psig / kPa]

3

207

5

345

6

414

7

483

8

552

10

689

12

827

13

896

15

1034

TL10

3.20

80

3.20

80

3.15

80

3.20

80

3.20

80

3.20

80

3.20

80

3.20

80

X

X

TL20

3.20

80

3.20

80

3.15

80

3.20

80

3.20

80

3.20

80

3.20

80

3.20

80

3.20

80

TL30

4.00

100

4.00

100

4.00

100

4.00

100

4.00

100

4.40

112

4.40

112

4.40

112

4.40

112

TL40

4.00

100

4.00

100

4.00

100

4.00

100

4.40

112

4.40

112

4.40

112

4.40

112

4.40

112

TL41

4.00

100

4.00

100

4.00

100

4.40

112

4.40

112

4.40

112

4.40

112

X

X

X

X

TL50

4.70

118

4.70

118

470

118

5.20

132

5.20

132

5.50

140

5.50

140

5.50

140

5.50

140

TL60

5.20

132

5.20

132

5.20

132

5.20

132

5.50

140

5.50

140

5.50

140

5.50

140

5.50

140

TL61

5.20

132

5.20

132

5.50

140

5.50

140

5.90

150

5.90

150

5.90

150

X

X

X

X

TL70

5.50

140

5.50

140

5.90

150

5.90

150

6.30

160

6.30

160

6.30

160

6.30

160

6.30

160

TL80

5.50

140

5.50

140

5.90

150

6.30

160

6.30

160

6.30

160

6.30

160

6.30

160

6.30

160

TL81

6.00

160

6.00

160

6.70

170

6.70

170

7.10

180

7.10

180

7.10

180

X

X

X

X

TL90

7.90

200

7.90

200

7.90

200

7.90

200

7.90

200

9.00

225

9.00

225

9.90

250

9.90

250

TL100

7.90

200

7.90

200

7.90

200

7.90

200

9.00

225

9.00

225

9.90

250

9.90

250

10.90

275

TL101

7.90

200

7.90

200

7.90

200

7.90

200

9.00

225

9.00

225

X

X

X

X

X

X

TL110

7.90

200

7.90

200

7.90

200

9.00

225

9.30

236

9.90

250

9.90

250

9.90

250

11.80

300

TL120

7.90

200

7.90

200

9.00

225

9.30

236

9.90

250

9.90

250

11.80

300

X

X

X

X

TL900

9.30

236

9.30

236

9.30

236

9.90

250

11.80

300

13.80

350

13.80

350

X

X

X

X

Check pressure rating for all blowers

Table V: Recommended deflection force per belt

V-Belt Cross Section

Small Sheave Diameter Range

Small Sheave RPM Range

Speed Ratio Range

Recommended Deflection Force

Minimum

Maximum

inches

mm

lbs

kg

lbs

kg

3VX

2.20

56

1200 - 3600

2.00 to 4.00

2.8

1.27

4.1

1.86

2.35 - 2.50

60 - 64

1200 - 3600

3.2

1.45

4.7

2.13

2.65 - 2.80

67 - 71

1200 - 3600

3.5

1.59

5.1

2.31

3.00 - 3.15

76 - 81

1200 - 3600

3.8

1.72

5.5

2.49

3.35 - 3.65

85 - 93

1200 - 3600

4.1

1.86

6.0

2.72

4.12 - 5.00

105 - 127

900 - 3600

4.8

2.18

7.1

3.22

5.30 - 6.90

135 - 175

900 - 3600

5.8

2.63

8.6

3.90

5VX

4.40 - 4.65

112 - 118

1200 - 3600

2.00 to 4.00

9.0

4.08

13

5.90

4.90 - 5.50

124 - 140

1200 - 3600

10

4.54

15

6.80

5.90 - 6.70

150 - 170

1200 - 3600

11

4.99

17

7.71

7.10 - 8.00

180 - 203

600 - 1800

13

5.90

19

8.62

8.50 - 10.90

216 - 277

600 - 1800

14

6.35

20

9.07

11.80 - 16.00

300 - 406

400 - 1200

15

6.80

23

10.43

5V

7.10 - 8.00
8.50 - 10.90
11.80 - 16.00

180 - 203
216 - 277
300 - 406

600 - 1800
600 - 1800
400 - 1200

2.00 to 4.00

11
13
14

4.99
5.90
6.35

16
18
21

7.26
8.16
9.53

8V

12.50 - 17.00
18.00 - 24.00

318 - 432
457 - 610

600 - 1200
400 - 900

2.00 to 4.00

28
32

12.70
14.51

41
48

18.60
21.77

* If replacing 3V or 5V belts with the same belt length and same number of
belts in 3VX or 5VX cross section, belt tension does not need to be increased.

NOTE: New drives designed with 3VX or 5VX belts should be
tensioned at the respective deflection force value shown in above
table.

Simplified V-Belt Tensioning Method

Fig. 5

Step 1– Determine the force required to
deflect one belt 1/64" per inch (1/64th cm per centimeter) of span length.

Step 2– Measure the span length of your drive. Compare this deflection force with the range given in Table
V.

If it is less than the minimum recommended force, the belts should be re-tensioned.

If it is more than the maximum recommended force, the drive is tighter than it needs to be.

The diameters of the system piping must never
be smaller than the diameters of the blower openings. If the
diameters are different, use a taper connector. The system piping
should be properly aligned and supported to prevent placing stress
on the blower. Provide flexible joints. The pipes must be thoroughly
cleaned before connection. The gaskets must not interfere with the
gas system.

WARNING: Remove the protective covers from the blower openings
before connecting the pipes.

Use only authorized specialists to set up the electrical system,
working in compliance with regulations applying to the place of
installation and in accordance with the requirements of the local
body supplying electrical energy. Check on the motor plate:

Voltage

Frequency

Number of phases

Absorbed current

Connect the cables as shown in the diagram accompanying the
terminal box of the motor. If the diagram has not been supplied,
request it from the motor manufacturer. Use electrical cables of
suitable size, depending on the nominal current of the electrical
motor. Keep the electric cables away from heat sources and/or
pointed edges. The motor must be protected by means of an automatic
switch set at the value of the rated current shown on the plate. For
the safety of personnel, the system must be protected by a suitable
grounding device.

WARNING: Blower service must be carried out only after
disconnecting the electric supply.

The first oil change should be performed after 100 working hours.
Further oil changes are performed every 2000 working hours. Oil
should be checked regularly and oil changes made more frequently if
lubricant becomes contaminated due to adverse conditions.

The type of oil is shown in paragraph 10.

WARNING: Dispose of the used oil in accordance with the
local regulations.

WARNING: Regardless, stick to the half way mark on the
oil level sight glass.

Disassembly of the blower within the warranty period results in
the cancellation of the warranty.

Disassembly repair work and reassembly of the blower must be
carried out only by skilled personnel and with the aid of suitable
equipment and the relevant manual. This manual contains only the
instructions for preventative maintenance. For any references to
components see attached sections.

NOTE: The warranty does not cover damages caused by
operations carried out incorrectly during disassembly and/or
reassembly of the blower.

WARNING: Before starting disassembly of the blower, make
sure that the power has been disconnected. Follow the instructions
in paragraph 9.2.

Disassemble the drive components (sheave or coupling), following
the manufacturer's instructions if there are locking devices or by
means of an extractor if attached directly onto the shaft.

WARNING: Do not hammer the shaft, coupling or sheave.

Personnel who may come into contact with the blower must observe
the most elementary safety rules in order to minimize the
possibility of suffering physical injury With this in mind, all
personnel who work in or pass through the area where the blower is
functioning must be instructed in the safety rules to follow and
must be warned through the use of danger notices.

Check that the pour point of the oil is less than the minimum
temperature that can be reached in the ambient If this is not the
case, select an oil with a lower viscosity (a g.: ISO VG-100), or
use an oil specially made for low temperatures according to
recommendations of oil producers.